Leviticus 27:26

“But no one can consecrate a firstborn of the livestock, whether an animal from the herd or flock, to the Lord, because a firstborn already belongs to the Lord.

Exodus 13:2

“Consecrate every firstborn male to Me, the firstborn from every womb among the Israelites, both man and domestic animal; it is Mine.”

Exodus 13:12-13

you are to present to the Lord every firstborn male of the womb. All firstborn offspring of the livestock you own that are males will be the Lord’s.

Exodus 22:30

Do the same with your cattle and your flock. Let them stay with their mothers for seven days, but on the eighth day you are to give them to Me.

Numbers 18:17

“However, you must not redeem the firstborn of an ox, a sheep, or a goat; they are holy. You are to sprinkle their blood on the altar and burn their fat as a fire offering for a pleasing aroma to the Lord.

Deuteronomy 15:19

“You must consecrate to the Lord your God every firstborn male produced by your herd and flock. You are not to put the firstborn of your oxen to work or shear the firstborn of your flock.

Treasury of Scripture Knowledge

Summary

Only the firstling of the beasts, which should be the LORD'S firstling, no man shall sanctify it; whether it be ox, or sheep: it is the LORD'S.

Bible References

Which

Exodus 13:2
“Consecrate every firstborn male to Me, the firstborn from every womb among the Israelites, both man and domestic animal; it is Mine.”
Exodus 22:30
Do the same with your cattle and your flock. Let them stay with their mothers for seven days, but on the eighth day you are to give them to Me.
Numbers 18:17
“However, you must not redeem the firstborn of an ox, a sheep, or a goat; they are holy. You are to sprinkle their blood on the altar and burn their fat as a fire offering for a pleasing aroma to the Lord.
Deuteronomy 15:19
“You must consecrate to the Lord your God every firstborn male produced by your herd and flock. You are not to put the firstborn of your oxen to work or shear the firstborn of your flock.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.